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This website isn't equipped to reproduce most mathematical symbols in the questions. I'll see if I can translate.

2x + 3(x - 10) = 45

2x + 3x - 30 = 45

5x - 30 = 45

5x = 75

x = 15

Check it.

2(15) + 3(15 - 10) = 45

30 + 15 = 45

It checks.

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7y ago

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